diff --git a/README.md b/README.md
index 6736b7f..fef68b2 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # POLYnomial MANI.PuLation
 
-A symbolic polynomial calculator in Prolog
+A symbolic polynomial calculator in Prolog.
 
 ## How to run